ADHOC: Remove Memory Stores Alert in RES Page (#1307)

## Changes
Extended services is available to more than Memory Stores.

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Author: ZhongBot

content/en-us/cloud-services/extended-services.md

@@ -66,10 +66,6 @@ Your Extended Services account can be in one of the following statuses:
 
 ## Enable a service
 
-<Alert severity="warning">
-  Extended Services is currently only available for the [Memory stores service](./memory-stores/index.md).
-</Alert>
-
 To enable a service:
 
 1. Go to **Extended Services**.